| Summary: | 碩士 === 國立中正大學 === 通訊工程研究所 === 94 === With the development of wireless communications,
the demand for high speed wireless local area network (WLAN) increases.
The current IEEE 802.11a/g can provide data rate up to 54 Mbps by using the orthogonal frequency division multiplexing (OFDM) technique.
In the near future, the multiple input multiple output (MIMO) technique will be combined with the OFDM technique to provide higher data rate transmission. In this thesis, based on the EWC HT PHY Specification version 1.27, a baseband transmitter for the 2-by-2 MIMO-OFDM system is implemented using field programmable gate array (FPGA). The designed baseband transmitter uses one circuit to generate signals for the two transmit antennas. Hence, the designed circuit needs 71% gate count of that needed by the direct circuits that generate two transmit signals in parallel. However, the working frequency that this design needs is doubled.
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